Mechanized Production + Ugin's Nexus + Teferi's Realm

Mechanized Production
Ugin's Nexus
Teferi's Realm

Requires
Mechanized Production must be on the battlefield. Ugin's Nexus must be on the battlefield. Teferi's Realm must be on the battlefield. Mechanized Production attached to Ugin's Nexus.
Steps
  1. At the beginning of your upkeep, Mechanized Production and Teferi's Realm trigger.
  2. Resolve the Mechanized Production trigger, creating a token copy of Ugin's Nexus.
  3. Put the token copy of Ugin's Nexus into exile due to the legend rule, causing you to take an extra turn after this one.
  4. Resolve the Teferi's Realm trigger, causing Ugin's Nexus and Mechanized Production to phase out.
  5. Move to your next turn.
  6. At the beginning of your untap step, Mechanized Production and Ugin's Nexus phase in.
  7. Repeat.
Results
Infinite turns.

Top Commanders (2)
Taniwha
0.44% of 228 decks 1 decks
Brudiclad, Telchor Engineer
0.02% of 4744 decks 1 decks
Creatures (29)
Schema Thief
100% of 1 decks +100% synergy
Bilbo, Retired Burglar
100% of 1 decks +100% synergy
Plundering Barbarian
100% of 1 decks +100% synergy
Rionya, Fire Dancer
100% of 1 decks +99% synergy
Hellrider
100% of 1 decks +99% synergy
Ethereal Investigator
100% of 1 decks +99% synergy
Canoptek Scarab Swarm
100% of 1 decks +99% synergy
Krenko, Mob Boss
100% of 1 decks +99% synergy
Chrome Host Seedshark
100% of 1 decks +99% synergy
Humble Defector
100% of 1 decks +99% synergy
Combat Celebrant
100% of 1 decks +99% synergy
Jaxis, the Troublemaker
100% of 1 decks +99% synergy
Magda, Brazen Outlaw
100% of 1 decks +99% synergy
Thought Monitor
100% of 1 decks +98% synergy
Feldon of the Third Path
100% of 1 decks +98% synergy
Goldspan Dragon
100% of 1 decks +97% synergy
Shimmering Efreet
50% of 2 decks +50% synergy
Faerie Artisans
50% of 2 decks +50% synergy
Timestream Navigator
50% of 2 decks +50% synergy
Corsair Captain
50% of 2 decks +50% synergy
Reef Worm
50% of 2 decks +50% synergy
Spawning Kraken
50% of 2 decks +49% synergy
Curiosity Crafter
50% of 2 decks +49% synergy
Thassa, God of the Sea
50% of 2 decks +49% synergy
Trophy Mage
50% of 2 decks +49% synergy
Shimmer Dragon
50% of 2 decks +49% synergy
Tribute Mage
50% of 2 decks +49% synergy
Silver Myr
50% of 2 decks +49% synergy
Silent Arbiter
50% of 2 decks +48% synergy
Instants (18)
See Double
100% of 1 decks +99% synergy
Big Score
100% of 1 decks +95% synergy
An Offer You Can't Refuse
100% of 1 decks +90% synergy
Cyclonic Rift
100% of 2 decks +86% synergy
Chaos Warp
100% of 1 decks +84% synergy
Time and Tide
50% of 2 decks +50% synergy
Sunder
50% of 2 decks +50% synergy
Gush
50% of 2 decks +50% synergy
Foil
50% of 2 decks +50% synergy
Engulf the Shore
50% of 2 decks +50% synergy
Capsize
50% of 2 decks +49% synergy
Perplexing Test
50% of 2 decks +49% synergy
High Tide
50% of 2 decks +48% synergy
Resculpt
50% of 2 decks +47% synergy
Fact or Fiction
50% of 2 decks +46% synergy
Mystical Tutor
50% of 2 decks +42% synergy
Arcane Denial
50% of 2 decks +41% synergy
Counterspell
50% of 2 decks +29% synergy
Sorceries (10)
Haunting Imitation
100% of 1 decks +100% synergy
Mirage Mockery
100% of 1 decks +100% synergy
Faerie Slumber Party
100% of 1 decks +100% synergy
Asinine Antics
100% of 1 decks +99% synergy
Gamble
100% of 1 decks +95% synergy
Vandalblast
100% of 1 decks +92% synergy
Blasphemous Act
100% of 1 decks +84% synergy
Whelming Wave
50% of 2 decks +49% synergy
Fabricate
50% of 2 decks +47% synergy
Windfall
50% of 2 decks +43% synergy
Utility Artifacts (13)
Urabrask's Forge
100% of 1 decks +99% synergy
Mirror Box
100% of 1 decks +99% synergy
Ward of Bones
50% of 2 decks +50% synergy
Quicksilver Fountain
50% of 2 decks +50% synergy
Soul Foundry
50% of 2 decks +50% synergy
Worldslayer
50% of 2 decks +50% synergy
Trading Post
50% of 2 decks +49% synergy
Sapphire Medallion
50% of 2 decks +48% synergy
Mirage Mirror
50% of 2 decks +48% synergy
Isochron Scepter
50% of 2 decks +47% synergy
Idol of Oblivion
50% of 2 decks +46% synergy
Skullclamp
50% of 2 decks +37% synergy
Swiftfoot Boots
50% of 2 decks +22% synergy
Enchantments (12)
Endless Evil
100% of 1 decks +99% synergy
Court of Vantress
100% of 1 decks +99% synergy
Curse of Opulence
100% of 1 decks +98% synergy
Shimmer
50% of 2 decks +50% synergy
Land Equilibrium
50% of 2 decks +50% synergy
Mana Vortex
50% of 2 decks +50% synergy
Dream Tides
50% of 2 decks +50% synergy
Overburden
50% of 2 decks +50% synergy
Mana Breach
50% of 2 decks +50% synergy
Back to Basics
50% of 2 decks +49% synergy
Thopter Spy Network
50% of 2 decks +48% synergy
Rhystic Study
50% of 2 decks +36% synergy
Planeswalkers (6)
Saheeli Rai
100% of 1 decks +100% synergy
Chandra, Legacy of Fire
100% of 1 decks +99% synergy
Chandra, Hope's Beacon
100% of 1 decks +99% synergy
Saheeli, Sublime Artificer
100% of 1 decks +99% synergy
Karn, Scion of Urza
50% of 2 decks +49% synergy
Teferi, Master of Time
50% of 2 decks +49% synergy
Utility Lands (12)
Hanweir Battlements
100% of 1 decks +99% synergy
Kher Keep
100% of 1 decks +99% synergy
Treasure Vault
100% of 1 decks +97% synergy
Sokenzan, Crucible of Defiance
100% of 1 decks +97% synergy
Great Furnace
100% of 1 decks +97% synergy
Reliquary Tower
100% of 2 decks +72% synergy
Mirrorpool
50% of 2 decks +49% synergy
Seat of the Synod
50% of 2 decks +47% synergy
Darksteel Citadel
50% of 2 decks +46% synergy
Buried Ruin
50% of 2 decks +45% synergy
War Room
50% of 2 decks +43% synergy
Rogue's Passage
50% of 2 decks +31% synergy
Mana Artifacts (8)
Liquimetal Torque
100% of 1 decks +96% synergy
Arcane Signet
100% of 2 decks +29% synergy
Sol Ring
100% of 2 decks +16% synergy
Midnight Clock
50% of 2 decks +47% synergy
Basalt Monolith
50% of 2 decks +47% synergy
Sky Diamond
50% of 2 decks +47% synergy
Thran Dynamo
50% of 2 decks +45% synergy
Thought Vessel
50% of 2 decks +34% synergy
Lands (5)
Shivan Reef
100% of 1 decks +94% synergy
Training Center
100% of 1 decks +94% synergy
Steam Vents
100% of 1 decks +91% synergy
Exotic Orchard
50% of 2 decks +15% synergy
Command Tower
50% of 2 decks -23% synergy